1972
1972 is the year of the last crewed Moon landing.
- Even
- Composite
Where 1972 fits
Why 1972 is special
Apollo 17 left the surface in December 1972 and no human has been beyond low Earth orbit since. The programme was cancelled while flight hardware for further missions already existed, which is why the pause is measured in decades rather than in technical limits.
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 17, 29, 34, 58, 68, 116, 493, 986, 1972
- Prime factorisation
- 2^2 × 17 × 29
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1972
- Binary
- 11110110100
- Octal
- 3664
- Hexadecimal
- 7b4
- Roman numeral
- MCMLXXII
- Scientific notation
- 1.972 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
Apollo 11 landed in 1969 and Apollo 17 left in 1972. Six landings occurred in forty-one months, and none since.
View 1969 →Other connections
- is associated with1969
why?
Strength 0.50, confidence "high".
Science
Apollo 17 left the lunar surface in December 1972 and no human has been beyond low Earth orbit since. The programme ended while flight hardware for further missions already existed, so the gap reflects funding rather than any technical limit.
DocumentedSciencePeriod: December 1972
Common questions
Is 1972 a prime number?
No, 1972 is not prime.
What are the factors of 1972?
The factors of 1972 are 1, 2, 4, 17, 29, 34, 58, 68, 116, 493, 986, 1972.
What is 1972 in Roman numerals?
1972 in Roman numerals is MCMLXXII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026